On a Tuesday evening in April 2017, 28-year-old Tiquan Hamilton was fatally shot shortly before 9 p.m. in Martinez Playground at Stagg Walk and Manhattan Avenue in East Williamsburg, Brooklyn. Emergency responders found him with two gunshot wounds to the torso; he was taken to Woodhull Hospital and pronounced dead. The playground, normally used for basketball and handball, became a crime scene as police investigated.

Detectives canvassing the area learned a man later arrived at Harlem Hospital with a graze wound from a bullet. That man’s identity was not released; he initially said he had been shot in Downtown Manhattan, a claim investigators found inconsistent as they examined his possible connection to Hamilton’s shooting. Police did not recover a weapon at the scene and no arrests were announced.

Did anyone see or hear anything in Martinez Playground that night or know more about movements around Stagg Walk and Manhattan Avenue shortly before 9 p.m.?